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Rider 550 power requirement?


Userlevel 2
My wife and I are doing an extended trip across much of the US. There are three devices on the dash: action cam, phone and GPS. Right now the GPS is a Garmin 660. It has its own power cable and there's no easy way to hack that. So there are three cables running across the dash. What I want to do is have only one cable across the dash. I can use a USB splitter to combine the phone and action cam cables . The Garmin demands its own wire. I'm stuck with two cables.

AFAIK, the car mount comes with a USB cable connector. Good news so far. However it seems that the TT docs say the 550 needs its own USB source that must be able to handle the current demanded to keep the battery from discharging. The car mount comes with a car plug in adapter which is supposed to be able to keep the 550. There's no mention about whether the "magical" TT adapter does something special or one of the TT USB ports is a 2.1A port.

Phrased differently, how much current does the Rider 550 need?
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Best answer by Niall 10 December 2018, 16:27

@RBEmerson

Your device should have 1.2Amps to run AND charge the battery.
The charger must be rated at 5V 2amps as the device draws 1.2amps
To check that your charger is working get a USB meter for $7.99 from Amazon

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Userlevel 7
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RBEmerson wrote:

There's no mention about whether the "magical" TT adapter does something special or one of the TT USB ports is a 2.1A port.


https://www.tomtom.com/en_gb/sat-nav/accessories/chargers-cables/compact-car-charger/

https://www.tomtom.com/en_gb/sat-nav/accessories/chargers-cables/high-speed-dual-charger-2017/
Userlevel 2
The second link gives a lower bound for the current needed, but not the actual demand.

Very long story short, I need to support three devices from one 2.4 port. I have a USB splitter which supports the connections. The devices: phone, action cam, and Rider 550. The 2.4A port is presently supporting the camera and phone successfully. The question is how much current does the Rider 550 draw. If the total (3 devices) draw exceeds 2.4A, time to re-think things.
Userlevel 7
@RBEmerson

Your device should have 1.2Amps to run AND charge the battery.
The charger must be rated at 5V 2amps as the device draws 1.2amps
To check that your charger is working get a USB meter for $7.99 from Amazon

Userlevel 2
On order. This will help with figuring out the total draw from all three devices as well as from the 550. I might even leave it in, with the splitter on one side and the 550 on the other side. Woohoo! 😀

Now, if it only passes power and not data(*), life is sweet!

Great thanks for the advice!

(*) I don't want to share data. In this setting it's meaningless. Worse, the camera can be in USB mode or shoot video, but not both. If the camera thinks it should move data and not just accept external power - with an external battery pack, for example... nighty night.
Userlevel 7
@RBEmerson

Glad that was helpful.

A USB meter is very useful to track dodgy cables as well 🙂
Userlevel 2
Precisely. 🙂

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